Saw-clamp.



PATENTED JUNE 20, 1905.

J. LOKEN.

SAW CLAMP.

APPLIOATION FILED MAY 14, 1904.

Swan IOhJZ/LO/LEH/ UNHED STATES Patented June 20, 1905.

JOHN LOKEU, OF WINDOW, l\llNNlCS()'l.-\.

SAW-CLAMP.

SPECIFICATION forming part of Letters Patent No. 792,998. dated June20,1905.

Appl cation filed May 14,1904. Serial No. 208,057.

lb n71 117mm it 'nmy con/(fern.-

Be it known that I, Join: LOKICY, a citizen of the United States,residing at "indom, in the county of Cottonwood and State of innesota,have invented new and useful Improvements in Saw-Clamps, of which thefollowing is a specilication.

Hy invention relates to new and useful im- PI'OVOIllOntS in saw-clamps;and its object is to provide a simple device of this character which canbe used upon circular or crosscut saws and which can be quickly clampedupon and removed from a saw.

A further object is to provide interchangeable heads whereby the clampcan be used upon different forms of saws.

\Vith the above and other objects in view the invention consists of abase upon which is arranged a lixed standard having a socket in itsupper end for the reception of the shank of a clamping-head. A movablearm is pivoted to the base and is also provided at its upper end with asocket for the reception of the shank of a head, and novel detachableclamping means are arranged upon the standard and arm for forcing theheads toward each other.

The invention also consists of the further novel construction andcombination of parts hereinafter more fully described, and illustratedin the accompanying drawings, showing the preferred form of myinvention, and in which Figure 1 is a perspective view thereo f. Fig. 2is a vertical longitudinal section. Fig. 3 is a detail view of one ofthe heads and showing a band-saw attachment, and Fig. 4: is aperspective view of a modified form of head for use upon circular saws.Fig. 5 is a detail perspective view of the nut.

Referring to the figures by numerals of re ference, 1 is a base havingears 2 extending therefrom and adapted to be secured in any suitablemanner to a floor. This base has a standard 3 integral therewith andslotted longitudinally, as shown at st, and the upper end of thestandard has cross-strips 5, which form a socket for the reception ofthe shank 6 of a clamping-head T. An car 8 extends forward from base 1,and a pivot-pin 9 projects therefrom and forms the pivot of an arm 10,which is longitudinally slotted and has cross-strips ll at its upperend, which form a socket for the shank of another clamping-howl T. A bowspring 12 is interposed between the standard 3 and arm and has reducedends 1?, which extend at angles therefrom and project into the slots inthe standard 3 and arm ll). A T-shaped nut has its reduced portionpositioned within the slot 4, and its enlarged portion engages the outerface of the standard 3 to prevent the nut from being drawn within theslot, whereby the nut is slidably mounted, and this nut is engaged bythe threaded end of a bolt [5, which extends through a strap us,slidably mounted upon the outer face of arm 10. A clamping-nut l7mounted on the bolt 15 between the standard and arm, and this nut hasrecesses 18 therein, whereby the same may be readily turned by means ofa suitable tool. A pin 15) extends through the head 20 of bolt 15, andmounted thereon is a cam 21, having a handle 22 projecting therefrom.

\Vhen it is desired to clamp a saw between the head 7, the handle 22 isswung upward, so as to permit the spring 12 to press arm 10 away fromstandard 3, thereby forming an opening between the two headsT. A saw canthen be placed therebetween and handle 22 swung downward. Cam 21 willpress the arm 10 toward the standard 3, and the saw will be securelyclamped into position. If it is desired to hold a circular saw withinthe clamp, the bolt 15 is removed by detaching the nuts 17 and ii. andsaid bolt is then inserted through the opening in the center of the sawand replaced within the nuts 1* and 17. Bolt 15 is then adjusted withinthe slots in the standard 3 and arm 10 until the teeth of the saw arebrought adjacent, but above, the heads of the clamp. The bolt is thenlocked in this position by clamping the standard 3 between the nuts 1%and 17.

\Vhere the device is used with a circular saw, a head 23, such as shownin Fig. 4', is employed. \Vith this form of head a curved clamping edgeis provided. \Vhen it is desired to release the saw so as to permit thesame to be partly rotated, handle 22 is swung upward, and after the sawhas been adjusted to its new position it can be again clamped bypressing handle 22 downward.

If it is desired to use the clamp upon a bandsaw, angular brackets 24are secured to the ends of one of the heads 7 by means of setscrews 25,which are inserted in apertures 26, formed adjacent the ends of thehead. It will be seen that the heads are readily detachable, and as theshanks thereof are curved they become firmly seated by gravity withinthe sockets.

It is apparent that the slots 4 and 10 not only provide for theadjustable mounting of the clamping means, but also provide, by aid ofthe cross-strips 5 and 11, sockets in the upper ends of the standard 3and arm 10 for the reception of the shanks 6 of the clampingheads, andalso provide for the application of the spring 12.

In the foregoing description I have shown the preferred form of myinvention; but I do not limit myself thereto, as I am aware thatmodifications may be made therein without departing from the spirit orsacrificing any of the advantages thereof, and I therefore reserve theright to make such changes as fairly fall within the scope of myinvention.

Having thus fully described the invention, what is claimed as new is Ina device of the character described, a base having a standard formedintegral therewith and provided with a longitudinal slot extendingthroughout its entire length, an arm pivotally secured to said base andprovided with a longitudinal slot extending throughout its entirelength, cross-strips secured to the upper ends of the standard and armto provide sockets in their upper free ends, a slide upon the arm, abolt extending through the slide and slidably mounted within the slotsin the standard and arm, a bolt-engaging device slidably mounted withinand engaging the walls of the slot and the standard, a clamping deviceadj ustabl y mounted upon the bolt between the standard and arm, a campivoted to the bolt and bearing upon the slide, clampingheads providedwithshanks adapted to be received by the said sockets, and a bow-shapedspring having its extremities mounted within the slots.

In testimony whereof I afi ix my signature in presence of two witnesses.

JOHN LOKEN.

IVitnesses:

H. E. HANSON, WV. H. JONES.

